Locks, especially for pivoting leaf doors



April 30, 1963 R. A. CAPTON LOCKS, ESPECIALLY FOR PIVOTING LEAF DOORS Filed July 5, 1960 2 Sheets-Sheet 1 22 INVENTOR. k 21 ROBERT QueusTE CePToN T 7 QMQMW HTTOENE? A ril 30, 1963 R. A. CAP-TON 3,087,749

LOCKS, ESPECIALLY FOR PIVOTING LEAF DOORS 2 Sheets-Sheet 2 Filed July 5, 1960 e\ 7 72b gi g ma 4 73c INVENTOR. ROBERT QUGUSTE CHPTQN HTTOENEY United States Patent 3,087,749 LOCKS, ESPECIALLY FOR PIVOTING LEAF DOORS Robert Auguste Capton, 3 Place Emile Landrin, Paris 20, France Filed July 5, 1960, Ser. No. 40,836 Claims priority,-application France July 20, 1959 4 Claims. (Cl. 292-99) My invention relates to locks and in particular to those used in connection with pivoting leaf doors.

An important object of my invention is to provide locks which meet the practical requirements better than those heretofore produced. More particularly, I provide such a lock in which the careful adjustment between lock and strike plate, which ordinary locks require, is unnecessary.

Other objects, features, uses and advantages of my in vention will be apparent during the course of the following description.

Hereinafter, assuming the door to be closed, the area which is faced by the side of the door that rests against the casing shall conventionally be called the front, and the area on the other side of the door shall be called the back.

Theinvention is directed toward providing the locks of the kind in question which essentially comprise a box which is designed to be affixed to the door casing; a hook which is mounted on the said box so as to be able to shift between a locking position, in which the hook is capable of engaging behind the door leaf and holding the latter against the casing, and an open position in which it releases this leaf, and toward which it is urged by a preferably elastic return device; a pusher which projects from the said box and which is mechanically connected to the hook so that, when the door leaf arrives into the locking position, this push rod is driven toward the front by the latter and itself drives the hook into the abovementioned locking position; and a locking device capable of holding the said hook in this latter position against the action of the above-mentioned return device.

Aside from this principal arrangement, the invention is applicable to certain other arrangements which are used preferably at the same time and which will be discussed more explicitly hereinafter.

More particularly, my invention contemplates certain aplications and certain embodiments of the aforesaid arrangements; and still more particularly, by way of new industrial products, it contemplates locks of the kind in question, involving the application of these same arrangements, the special elements and tools for their establishment, and the doors equipped with such locks.

In the accompanying drawings, forming a part of this application, and in which like numerals are employed to designate like parts throughout the same,

FIGURE -1 is an elevational view of a double door equipped with locks constructed according to my invention, one of the leaves being closed and the other open,

FIGURE 2 is a view, on a larger scale, along the line 2-2 of FIGURE 1, viewed in the direction of the arrows,

FIGURE 3 is a view in elevation, viewed in the direction of arrow 3 of FIGURE 2,

FIGURE 4 is a cross-sectional view along the line 4-4 of FIGURE 3, viewed in the direction of the arrows,

FIGURE 5 is a cross-sectional view, on a larger scale, along the lines 55 of FIGURE 1, viewed in the direction of the arrows, and

FIGURE 6 is a view similar to FIGURE 5, with the door leaf ajar.

According to the invention, and more particularly according to those of its applications and those of the em- 3,087,749 Patented Apr. 30, 1963 bodiments of its various parts to which it appears that preference should be given, and assuming that the lock is to be designed for doors with leaves pivoting about a vertical axis, the lock comprises: box '1 which is aflixed to casing 2 of the door; hook 3 which is mounted on box 1 so as to be able to shift between a locking position (FIGURE 1, left, and FIGURE 5), such that hook 3 is capable of engaging behind the door leaf 4, holding the latter against the usual rabbet 2a in casing 2, and an open position (FIGURE 1, right, and FIGURE 6), in which the hook 3 releases this leaf, and toward which it is urged by spring 5; pusher 6 which projects in relation to box 1 and which is connected mechanically to the hook in such a manner that, when the door leaf 4 reaches the locking position (following the arrow in FIGURE 6), this pusher is driven forward by the door leaf (that is to say, upward in FIGURES 5 and 6), and in turn drives the hook into the said locking position (FIGURE 5); and a locking device suitable for holding hook 3 in this latter position against the action of the spring 5.

With regard to pusher 6, it is advantageously affixed rigidly to hook 3, the two being generally made in one piece which is mounted on box 1 by means of pivot 7, the latter being oriented parallel to the corresponding edge of casing 2. This pivot 7 can be supported by two transverse plates 8 which are aflixed to box 1 by means, for example, of screws or rivets 9, and can serve as a guide for the hook 3pusher 6 assembly.

With regard to box '1, it may be formed, for example, of angle iron, one leg 10 of which is located parallel to the plane of the casing and on the rear side thereof, and is provided with opening 10a for the passage of the book 3; the other leg 11 of which faces door leaf 4 and is provided with notch 11a for the passage of the pusher 6. To the right of hook 3 and pusher 6, the edge of door leaf 4 is equipped with channel iron 12, this channel iron preferably having a greater length than the thickness of the assembly of book 3 and its pusher.

The active face 3a of hook 3, that is, the face against which the rear leg 12a of channel iron 12 is applied, is given a flat shape, and the assembly of the hook and its pivot 7 is arranged so that, in the locking position (FIG- URE 5), active face 3a rests flatly against leg 12a. Furthermore, active face 6a of hook 6 is given a rounded shape which facilitates its sliding on front leg 12b of channel iron 12. On the one hand, hook 3 is arranged so that it withdraws in relation to leg 11 of box 1 in the open position (FIGURE 6), and on the other hand, pusher 6 is arranged so that it continually projects with relation to the same leg. It is advantageous, as shown in FIG- URES 5 and 6, to offset pivot 7 with respect to pusher 6, toward the front and toward the inside, that is, toward the right of the figures.

As for spring 5, it can comprise, as shown in FIGURES 5 and 6, a coil spring partially imprisoned in hook 3 and resting against leg 11 of box 1.

The locking device is arranged so that it retracts automatically when the door is closed and so that a special operation is required in order to retract it when it is desired to open the door.

This locking device is seen to comprise bolt 13 which is advantageously mounted in a sliding fashion on box 1, and more particularly along leg 10 of the latter. The bolt is able to be guided by leg 10, by plate 14 mounted on the latter, and by studs 15 which are used to hold plate 14 in position.

The bolt is urged toward its active position (preferably upward as shown in FIGURES 2 to 4) by spring 16 which is placed between one of studs 15 and projection 13a provided on the bolt. On the one hand, it is provided with flat locking face 13b facing pin 17 which is rigidly affixed to the book 3 and on the other hand, it is provided with when the door leaf is closed (from the position of FIG- URE 6 to that of FIGURE but is then held practically without play by the locking face.

To operate the bolt when opening the door, the customary members can be used, such as push-button 18 rigidly afiixed to bolt 13 and passing through the angle-- iron leg at opening 10b, or latch 19 (FIGURE 1) operated by a hand lever (not shown). Also, according to the invention, a foot control can be used, this control comprising button 20 connected by linkage 21 to lower extremity 22 of bolt 13 and guided by a plate (not shown) to be affixed to the floor after a recess is cut in the latter. Lastly, it is possible to use any other system of remote control, mechanical (rod linkage), electromagnetic, pneumatic, or other.

Of course, any ordinary locking system can be adapted to such a lock to act on bolt 13, such as a warded lock or a cylinder lock 23, the rotation of the key in one direction blocking the bolt 13 in the locked position, and the rotation of the key in the other direction releasing the bolt and sliding it into the unlocked position.

In this manner, a lock is obtained whoseoperation is as follows:

The door leaf being open (FIGURE 1, right, and FIG- URE 6), it suifices to push the door in order for the lock to close automatically. In this movement, channel iron 12, coming into contact with pusher 6, causes hook 3 to swing about its pivot 7, compressing spring 5. Pin 17 pushes back bolt 13 against the action of spring 16 by passing over retraction face 130. When the door leaf comes against rabbet 2a, face 3a of hook 3 is applied against leg 12a of channel iron 12, bolt 13 is lifted by spring 16, placing its locking face 13b behind pin 17, and immobilizing the door leaf.

To open the door, it is necessary to lower bolt 13 (by means of members 18, 19,20 or 23), which permits spring 5 to disengage the hook 3, starting the opening movement of the door, after which spring 16 brings the bolt back into the upward position.

The advantages of this lock are particularly the following:

(1) The hooking of the door when it closes is certain, because the door locks itself when it is pushed all the way into the rabbet in the casing.

(2) It is not necessary to adjust with precision the relative heights of box 1 on the casing and channel iron 12 on the door, as is the rule with the usual strike plates and sliding bolt locks, and even when the door sags slightly, it still locks perfectly.

(3) The door leaf is no longer hollowed out on the edge to receive the usual lock casing, and since it is not damaged in any way, it canhe reused without difiiculty.

As is self-evident, and as it appearsfrom the foregoing, in any case, the invention is by no means limited to those applications nor to those embodiments of its various parts which have been particularly envisaged above; instead, it embraces all variations. In particular, instead of making the locking device to consist ,of the assembly of pin 17 rigidly affixed to hook 3 and of bolt 13 that can be moved in relation to box 1, -pin17 could be guidedon box 1, parallel to the axis of pivot 7, and could be made to cooperate with a bearing surface such as the wall of a-hole created in hook 3 at such a location that, when hook 3 is in the locked position (FIGURE 5), it is blocked by the engagement of the said pin in the hole in 'question. In this case,sliding pin 17 could be acted upon by any appropriate control, particularly by a remote control, operated electromagnetically, for example.

While I have disclosed my invention in relation to specific examples and in specific embodiments, I do not wish to be limited thereto, for obvious modifications will occur to those skilled in the art without departing from the spirit and scope of my invention.

Having thus described my invention, I claim:

1. In a lock for locking a leaf door adapted to sweep inside a room when opened and hinged to a door jamb provided with a recess facing the room and engageable by the free edge of the closed leaf door, the combination of a pivot parallel with the door hinge and carried in the part of the door recess furthest from the room and out of the path of the free edge of the leaf door, a hookshaped member revolvably carried by the pivot and including a straight section starting from the location of the pivot and a first and a second projection substantially facing the location of the closed leaf door and rigid with the straight section, said first projection being near the pivot end and said second projection being near the outer end of the straight section, with a gap formed between the projections, the minimum width of the gap being equal to the thickness of the leaf door, the first projection lying permanently in the'path of the free edge of the leaf door to be shifted thereby out of an inoperative position in which the second projection lies outside the path of the free edge of the leaf door into an operative position in which the leaf door is held in its closed position through application of both projections against the opposite sides of the closed leaf door, a spring urging the hook-shaped member into its operative position to release the leaf door, a bolt adapted to positively hold the hookshaped member in its operative position against the action of the spring, means urging the bolt into engagement with the hook-shaped member when shifted to its operative position, and means for releasing the bolt to allow the spring to act on the hook-shaped member.

2. In a lock for locking a leaf door adapted to sweep inside a room when opened and hinged to a door jamb provided with a recess facing the room and engageable by the free edge of the closed leaf door, the combination of an angle bar fitted in the recess and carrying a cutout flange extending in alignment with the outer surface of the door jamb and of the leaf door when closed and a second flange adapted to face the free edge of the closed leaf door, 'a'protecting channel member fitted over the free edge of the leaf door at the level of the recess in the door jamb, a pivot parallel with the door hinge and carried in the part of the door recess furthest from the room and out of the path of the free edge of the leaf door, a

hook-shaped member revolvably carried by the pivot and including a straight section starting from the location of the pivot and a first and a second projection substantially facing the location of the closed leaf door and rigid with the straight section, said first projection being near the pivot end and said second projection being near the outer end of the straight section, with a gap formed between the projections, the minimum width of the gap being equal to the'thickness of the leaf door, the projection on the free endof the straight section extending through the cut in the cutout flange, the first projection lying permanently in the path of the free edge of the leaf door to be shifted thereby out of an inoperative position in which the second projection lies outside the path of the free edge of the leaf door into an operative position in which the leaf door is held in its closed position through application of both projections against theopposite sides of the closed leaf door, a spring urging the hook-shaped member into its inoperative position to release the leaf door, a bolt adapted to positivelyhold the hook-shaped member in its operative position against the action of the spring, means urging the bolt into engagement with the hookshaped member'when shifted to its operative position, and means for releasing the bolt to allow the spring to act on the hook-shaped member.

3. In a lockfor locking a leaf door adapted to sweep inside a room when opened and hinged to a door jamb provided with a recess facing the room and engageable by the free edge of the closed leaf door, the combination of a pivot parallel with the leaf door hinge and carried in the part of the door recess furthest from the room and out of the path of the free edge of the leaf door, a hookshaped member revolvably carried by the pivot and including a straight section starting from the location of the pivot and a first and a second projection substantially facing the location of the closed leaf door and rigid with the straight section, said first projection being near the pivot end and said second projection being near the outer end of the straight section, with a gap formed between the projections, the minimum width of the gap being equal to the thickness of the leaf door, the first projection lying permanently in the path of the free edge of the leaf door to be shifted thereby out of an inoperative position in which the second projection lies outside the path of the free edge of the leaf door into an operative position in which the leaf door is held in its closed position through application of both projections against the opposite sides of the closed leaf door, a spring urging the hook-shaped member into its inoperative position to release the leaf door, a depending pin affixed to the hook-shaped member, a vertically shiftable bolt having a bevelled end engaging the path of the pin at the end of the angular shifting of the hook-shaped member into its operative position, elastic means urging the bolt upwardly to hold the pin in the position occupied by it at the end of the angular shifting of the hook-shaped member, and foot-operated means for depressing the bolt against the force of the elastic means to allow the spring to act on the hookshaped member.

4. In a lock for locking a leaf door adapted to swing inside a room when opened and hinged to a door jan'rb provided with a recess facing the room and engageable by the free edge of the closed leaf door, the combination end of the straight section, with a gap formed between the projections, the minimum width of the gap being equal to the thickness of the leaf door, the first projection lying permanently in the path of the free edge of the leaf door to be shifted thereby out of an inoperative position in which the second projection lies outside the path of the free edge of the leaf door into an operative position in which the leaf door is held in its closed position through application of both projections against the opposite sides of the closed leaf door, a spring urging the hook-shaped member into its inoperative position to release the leaf door, a movable spring-biased rod adapted to be moved against the action of its spring by the second projection upon closing of the leaf door and to hold the hook-shaped member engaged with the sides of leaf door edge, means for moving the spring-biased rod out of engagement with the second projection to release the hook-shaped member.

References Cited in the file of this patent UNITED STATES PATENTS 1,060,019 Pederson Apr. 29, 1913 1,137,819 Weide May 4, 1915 1,707,682 Parsons Apr. 2, 1929 1,755,392 Hagstrom et al. Apr. 22, 1930 2,976,071 Anderson Mar. 21, 1961 

1. IN A LOCK FOR LOCKING A LEAF DOOR ADAPTED TO SWEEP INSIDE A ROOM WHEN OPENED AND HINGED TO A DOOR JAMB PROVIDED WITH A RECESS FACING THE ROOM AND ENGAGEABLE BY THE FREE EDGE OF THE CLOSED LEAF DOOR, THE COMBINATION OF A PIVOT PARALLEL WITH THE DOOR HINGE AND CARRIED IN THE PART OF THE DOOR RECESS FURTHEST FROM THE ROOM AND OUT OF THE PATH OF THE FREE EDGE OF THE LEAF DOOR, A HOOKSHAPED MEMBER REVOLVABLY CARRIED BY THE PIVOT AND INCLUDING A STRAIGHT SECTION STARTING FROM THE LOCATION OF THE PIVOT AND A FIRST AND A SECOND PROJECTION SUBSTANTIALLY FACING THE LOCATION OF THE CLOSED LEAF DOOR AND RIGID WITH THE STRAIGHT SECTION, SAID FIRST PROJECTION BEING NEAR THE PIVOT END AND SAID SECOND PROJECTION BEING NEAR THE OUTER END OF THE STRAIGHT SECTION, WITH A GAP FORMED BETWEEN THE PROJECTIONS, THE MINIUMUM WIDTH OF THE GAP BEING EQUAL TO THE THICKNESS OF THE LEAF DOOR, THE FIRST PROJECTION LYING PERMANENTLY IN THE PATH OF THE FREE EDGE OF THE LEAF DOOR TO BE SHIFTED THEREBY OUT OF AN INOPERATIVE POSITION IN WHICH THE SECOND PROJECTION LIES OUTSIDE THE PATH OF THE FREE EDGE OF THE LEAF DOOR INTO AN OPERATIVE POSITION IN WHICH THE LEAF DOOR IS HELD IN ITS CLOSED POSITION THROUGH APPLICATION OF BOTH PROJECTIONS AGAINST THE OPPOSITE SIDES OF THE CLOSED LEAF DOOR, A SPRING URGING THE HOOK-SHAPED MEMBER INTO ITS OPERATIVE POSITION TO RELEASE THE LEAF DOOR, A BOLT ADAPTED TO POSITIVELY HOLD THE HOOKSHAPED MEMBER IN ITS OPERATIVE POSITION AGAINST THE ACTION OF THE SPRING, MEANS URGING THE BOLT INTO ENGAGEMENT WITH THE HOOK-SHAPED MEMBER WHEN SHIFTED TO ITS OPERATIVE POSITION, AND MEANS FOR RELEASING THE BOLT TO ALLOW THE SPRING TO ACT ON THE HOOK-SHAPED MEMBER. 